SOC 2 vs SOC 3: What's the Difference and Which One Do You Need?

What Is the Difference Between SOC 2 and SOC 3?

SOC 2 and SOC 3 are both reports produced under the American Institute of Certified Public Accountants (AICPA)’s System and Organization Controls (SOC) framework. Both assess how a service organization manages the security, availability, processing integrity, confidentiality, and privacy of its systems and data. The core difference is in their intended audience and the depth of information they contain: SOC 2 is a detailed, confidential report produced for customers and business partners who need to assess vendor risk; SOC 3 is a summarized, publicly shareable version of the same assessment intended for general audiences.

For SaaS vendors, technology companies, and any organization selling to enterprise buyers, understanding the difference between SOC 2 and SOC 3 is practically important. The wrong choice — or misunderstanding which report a customer is actually asking for — can create friction in procurement processes and undermine trust in the security evaluation.

TL;DR — Key Takeaways
• SOC 2 is a detailed, confidential report shared with specific customers under NDA; SOC 3 is a public summary.
• Both assess the same five Trust Services Criteria: security, availability, processing integrity, confidentiality, privacy.
• Enterprise procurement teams almost always want SOC 2 Type II, not SOC 3.
• SOC 3 is useful for marketing and public-facing trust signals but does not satisfy procurement due diligence.
• SOC 2 Type II covers a period of time (usually 6–12 months); SOC 2 Type I is a point-in-time assessment.

What Is SOC 2?

SOC 2 (System and Organization Controls 2) is an auditing standard developed by the AICPA that assesses a service organization’s controls over security, availability, processing integrity, confidentiality, and privacy. A SOC 2 report is produced by an independent, licensed CPA firm that audits the organization’s systems and controls and issues a formal opinion on whether the controls are appropriately designed and operating effectively.

The five areas assessed in a SOC 2 audit are known as the Trust Services Criteria (TSC). Security (referred to as the Common Criteria) is mandatory for all SOC 2 reports. The other four — availability, processing integrity, confidentiality, and privacy — are included at the organization’s discretion based on the services they provide and what is relevant to their customers’ concerns. Most enterprise customers are primarily interested in the Security and Availability criteria, though regulated industries may require Confidentiality and Privacy as well.

What Is the Difference Between SOC 2 Type I and SOC 2 Type II?

This distinction is as important as the SOC 2 vs SOC 3 distinction, and is often the source of confusion in vendor security conversations. A SOC 2 Type I report is a point-in-time assessment. It evaluates whether the organization’s controls are suitably designed as of a specific date. It does not assess whether those controls are operating effectively over a period of time. A SOC 2 Type II report covers a defined period — typically six to twelve months — and assesses both the design and the operating effectiveness of controls over that entire period. This is a significantly higher bar: it requires that controls be consistently applied throughout the audit period, not just on the audit date.

Enterprise procurement teams and CISOs almost universally require SOC 2 Type II, not Type I. A Type I report only demonstrates that controls existed at a point in time; it provides no assurance about whether those controls were actually applied consistently. When a vendor security questionnaire asks about SOC 2 certification, the buyer almost always means Type II. Vendors who offer only a Type I report in response to a Type II requirement typically generate follow-up questions and can slow down the procurement process.

What Is SOC 3?

SOC 3 is a publicly shareable summary of the information contained in a SOC 2 report. It is produced from the same audit as the SOC 2 report and covers the same Trust Services Criteria, but it contains significantly less detail. Where a SOC 2 report includes descriptions of the service organization’s systems, the specific control objectives and criteria tested, the auditor’s testing procedures, the test results, and any exceptions identified, a SOC 3 report contains only the auditor’s overall opinion — essentially a pass/fail — without the underlying evidence and detail.

Because it contains no confidential system or control detail, a SOC 3 report can be published publicly on a website. This makes it useful as a marketing and trust signal — a vendor can display the SOC 3 seal on their website or in marketing materials to indicate that they have passed a SOC audit. However, this public nature is also what makes it insufficient for procurement due diligence: the buyer cannot see what was tested, how it was tested, what exceptions existed, or what the scope of the audit was.

SOC 2 vs SOC 3: Which One Do Enterprise Buyers Want?

Enterprise procurement teams, CISOs, and security teams conducting vendor risk assessments almost always want the full SOC 2 Type II report, not the SOC 3 summary. The reason is straightforward: the buyer needs to assess the actual security controls in place, understand any exceptions or gaps identified during the audit, verify the scope of systems and services covered, and confirm the audit period and the identity of the auditing firm.

SOC 2 Type II
Audience: Customers, partners, procurement teams (under NDA)
Detail: Full — control descriptions, tests, results, exceptions
Confidentiality: Confidential — shared selectively under NDA
Use in procurement: Yes — satisfies vendor security due diligence
Validity for trust centers: Yes, often with redaction

SOC 3
Audience: General public
Detail: Summary only — auditor’s overall opinion
Confidentiality: Public — can be posted on website
Use in procurement: No — insufficient for security due diligence
Validity for trust centers: Yes, as a marketing signal alongside SOC 2

None of this means SOC 3 is useless — it serves a legitimate purpose as a public-facing trust signal. But it does not replace SOC 2 in vendor due diligence contexts. Vendors who receive a request for their SOC 2 report and provide a SOC 3 instead will typically receive a follow-up request for the full report, creating unnecessary friction in what is often an already complex procurement process.

How Does SOC 2 Relate to ISO 27001?

SOC 2 and ISO 27001 are the two most widely recognized information security assurance frameworks for technology vendors, and they are frequently discussed together in the context of enterprise vendor due diligence. Both involve independent assessment of a vendor’s security controls; both provide assurance to buyers about the vendor’s security posture. But they differ in important ways. ISO 27001 is an international management system standard that certifies the existence of a documented, systematic approach to managing information security. SOC 2 is an assurance report that provides detailed evidence of specific control effectiveness over a defined period. ISO 27001 is more common in European and global procurement contexts; SOC 2 is dominant in North American enterprise procurement.

Many enterprise vendors pursuing global enterprise deals pursue both certifications. ISO 27001 satisfies European buyers; SOC 2 satisfies North American ones. Organizations that hold both certifications typically find that their vendor security questionnaire completion rate improves significantly, because together the two frameworks address a large proportion of the questions that enterprise security questionnaires ask.

How Does SOC 2 Intersect with Security Questionnaires?

One of the most practical implications of SOC 2 certification for SaaS vendors is its impact on security questionnaire completion. When enterprise buyers conduct vendor security assessments, they typically send a security questionnaire covering dozens or hundreds of questions about the vendor’s security controls, data handling practices, incident response capabilities, and compliance certifications. A substantial proportion of these questions — often 40% to 60% — are directly addressed by a current SOC 2 Type II report.

Understanding why enterprises send security questionnaires makes clear the dynamic: buyers are trying to assess vendor risk efficiently before granting access to their systems and data. A vendor that can point to a current SOC 2 report as evidence for security control questions dramatically reduces the review burden on both sides. For procurement teams managing dozens of vendor assessments simultaneously, a vendor with a current SOC 2 report simply moves through the security gate faster than one without.

When Should a Vendor Pursue SOC 2 vs SOC 3?

The practical answer for most technology vendors is that both are worth having, but they serve different purposes and should not be confused with each other. The SOC 2 Type II report is the core compliance artifact that unlocks enterprise deals, satisfies security questionnaire requirements, and provides the evidential basis for trust. The SOC 3 report is a marketing asset that can be published publicly, displayed in sales materials, and used on trust center pages.

A vendor who pursues SOC 2 Type II can always produce a SOC 3 from the same audit at minimal additional cost. A vendor who only pursues SOC 3 — perhaps to avoid sharing confidential control details publicly — will find that enterprise procurement teams will still require the full SOC 2 Type II. The audit investment is the same regardless of which report is produced; the SOC 3 is simply a public-facing derivative.

How Steerlab Helps Vendors Respond to SOC 2 Questions in Procurement

For SaaS vendors and technology companies that regularly receive security questionnaires asking about their SOC 2 compliance, Steerlab.ai automates the drafting of security questionnaire responses from a centralized knowledge base — including the ability to consistently and accurately answer SOC 2 and compliance-related questions across multiple concurrent customer assessments without starting from scratch each time.

Frequently Asked Questions

What is the main difference between SOC 2 and SOC 3?

SOC 2 is a detailed, confidential report that includes full descriptions of controls, test procedures, results, and exceptions. It is shared selectively with customers under NDA. SOC 3 is a public summary that contains only the auditor’s overall opinion, without the underlying detail. SOC 3 can be published publicly; SOC 2 cannot without redaction.

Which report do enterprise buyers want — SOC 2 or SOC 3?

Enterprise procurement teams and CISOs conducting vendor due diligence almost always require the full SOC 2 Type II report, not the SOC 3 summary. The SOC 3 provides insufficient detail for a proper vendor risk assessment. Providing a SOC 3 in response to a SOC 2 request typically generates follow-up requests and creates friction in the procurement process.

What is the difference between SOC 2 Type I and SOC 2 Type II?

SOC 2 Type I is a point-in-time assessment that evaluates whether controls are suitably designed as of a specific date. SOC 2 Type II covers a period of time — typically six to twelve months — and assesses both the design and operating effectiveness of controls over that entire period. Enterprise procurement teams almost always require Type II.

Can a vendor share their SOC 2 report publicly?

A full SOC 2 report is not typically shared publicly because it contains detailed descriptions of systems, controls, and any exceptions identified — information that could create security risk if widely distributed. Vendors typically share their SOC 2 report with customers under NDA as part of the vendor due diligence process. The SOC 3, a summary version, can be shared publicly.

How often does a SOC 2 report need to be renewed?

There is no mandatory renewal period, but most enterprise buyers expect a SOC 2 report to cover a period ending within the past twelve months. A report covering a period that ended eighteen or twenty-four months ago will often generate questions about what has changed since. Most actively selling vendors maintain an annual SOC 2 audit cycle to ensure their report is always current.

Does SOC 2 satisfy GDPR requirements?

SOC 2 is not a GDPR compliance mechanism, but it provides evidence of security controls that support GDPR compliance, particularly the Article 32 obligation to implement appropriate technical and organizational security measures. Enterprise buyers may accept a SOC 2 report as evidence of security controls when assessing vendor compliance with GDPR’s processor security requirements, but it does not address other GDPR obligations such as data subject rights, lawful basis for processing, or international transfer mechanisms.

What Trust Services Criteria does SOC 2 cover?

SOC 2 assessments can cover up to five Trust Services Criteria: Security (also known as the Common Criteria, mandatory for all SOC 2 reports), Availability, Processing Integrity, Confidentiality, and Privacy. Most vendors include Security in their SOC 2 scope; the inclusion of additional criteria depends on the services they provide and what their customers require.

How does SOC 2 relate to ISO 27001?

Both are independent assurance frameworks for information security, but they differ in focus, geography, and methodology. SOC 2 is an assurance report focused on control effectiveness over a period of time, dominant in North American enterprise procurement. ISO 27001 is an international management system standard certifying a systematic approach to information security management, more commonly required by European and global buyers. Many enterprise vendors pursue both.